package com.hello.service;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.hello.constant.MessageConstant;
import com.hello.constant.PasswordConstant;
import com.hello.constant.StatusConstant;
import com.hello.context.BaseContext;
import com.hello.dto.EmployeeDTO;
import com.hello.dto.EmployeeLoginDTO;
import com.hello.dto.EmployeePageQueryDTO;
import com.hello.mapper.EmployeeMapper;
import com.hello.entity.Employee;
import com.hello.result.PageResult;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.security.auth.login.AccountNotFoundException;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeService {

    @Autowired
    EmployeeMapper employeeMapper;


    /**
     * 分页查询
     * @param employeePageQueryDTO
     * @return
     */
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO){
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);

        long total = page.getTotal();
        List<Employee> records = page.getResult();
        return new PageResult(total,records);
    }

    /**
     * 员工登录
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) throws AccountNotFoundException {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        Employee employee = employeeMapper.getByUserName(username);
        if(employee == null){
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码对比
        //对前端传来的明文密码进行md5加密处理
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if(!password.equals(employee.getPassword())){
            //密码错误
            throw new AccountNotFoundException(MessageConstant.PASSWORD_ERROR);
        }
        if(employee.getStatus() == StatusConstant.DISABLE){
            //账号被锁定
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_LOCKED);
        }

        //返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    public void save(EmployeeDTO employeeDTO) {
        System.out.println("当前线程的id：" + Thread.currentThread().getId());
        Employee employee = new Employee();

        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);

        //设置账号的状态，默认正常状态，1表示正常，0表示锁定
        employee.setStatus(StatusConstant.ENABLE);

        //设置密码，默认123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //        设置当前记录的创建时间和修改时间
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        //设置当前记录的创建人id和修改人id
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.insert(employee);
    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    public void startOrStop(Integer status, Long id) {
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();
        employeeMapper.update(employee);
    }


    /**
     * 根据id查询员工
     * @param id
     * @return
     */
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("******");
        return employee;
    }

    /**
     * 更改员工信息
     * @param employeeDTO
     */
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();

        BeanUtils.copyProperties(employeeDTO,employee);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }
}
